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| author | Julia Lawall <julia@diku.dk> | 2010-05-27 14:33:47 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:01:01 -0500 |
| commit | 1db90ea239b85479daedb978ea2f0a61776f074f (patch) | |
| tree | bb9c39b5a2aefc7cc4c945341ed1f4dda85b87c9 /drivers/scsi/hptiop.c | |
| parent | 2a1b7e575b80ceb19ea50bfa86ce0053ea57181d (diff) | |
| download | lwn-1db90ea239b85479daedb978ea2f0a61776f074f.tar.gz lwn-1db90ea239b85479daedb978ea2f0a61776f074f.zip | |
[SCSI] hptiop: Eliminate a NULL pointer dereference
The end of the function is reachable both when host is and is not NULL.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@
if ((E == NULL && ...) || ...)
{
... when != if (...) S1 else S2
when != E = E1
* E->f
... when any
return ...;
}
else S3
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/hptiop.c')
| -rw-r--r-- | drivers/scsi/hptiop.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c index 645f7cdf21ab..0729f150b33a 100644 --- a/drivers/scsi/hptiop.c +++ b/drivers/scsi/hptiop.c @@ -1157,7 +1157,7 @@ free_pci_regions: disable_pci_device: pci_disable_device(pcidev); - dprintk("scsi%d: hptiop_probe fail\n", host->host_no); + dprintk("scsi%d: hptiop_probe fail\n", host ? host->host_no : 0); return -ENODEV; } |